A n a l y s i s o f t h e T r a d i t i o n a l P a s s i v e S y s t e m s
257
The passive working of the Zisa Complex
:
Comparing Theories
There are some assumptions about the passive systems working that have not a
scientific evidence.
The hypothesis of Prof. Giuseppe Bellafiore
1
(Fig.5) considers that there is an upward
movement of the air favored by the pressure gradient, the channels work as suction of
fresh air and the
Salsabil
produces evaporative cooling.
The hypothesis of Prof. Armando La Pica
2
(Fig.6) gives importance to the horizontal
motion of the air and to the breeze capture, but it considers improbable the channels
working because of the excessive drop pressure.
Figure
5
: Longitudinal section. Original configuration and motion of the air. Hypothesis Bellafiore.
Figure
6
: First floor. Original configuration and motion of the air. Hypothesis La Pica.
The hypothesis of the researcher Ursula Staacke
3
(Fig.7) considers the horizontal
ventilation favored by temperature and pressure gradient; the upward flow of air on the
top floor and the cooling due to the
Salsabil
.
